diff --git a/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs b/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
index 4c4bee1b3..c529bbe99 100644
--- a/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
+++ b/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
@@ -90,7 +90,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 					return false;
 				}
 ,
-				GetDisplayString = (value) => "{0:0.0}mm".FormatWith(value)
+				GetDisplayString = (value) => "{0:0.0#}mm".FormatWith(value)
 			};
 
 			zHeightDisplayInfo.VisibleChanged += (s, e) =>
diff --git a/PartPreviewWindow/View3D/SideBar/ScaleControl.cs b/PartPreviewWindow/View3D/SideBar/ScaleControl.cs
index 05bdef6be..0fcbd79c7 100644
--- a/PartPreviewWindow/View3D/SideBar/ScaleControl.cs
+++ b/PartPreviewWindow/View3D/SideBar/ScaleControl.cs
@@ -234,7 +234,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 			// keep the bottom where it was
 			AxisAlignedBoundingBox scaledBounds = selectedItem.GetAxisAlignedBoundingBox(Matrix4X4.Identity);
-			PlatingHelper.PlaceMeshAtHeight(selectedItem, scaledBounds.minXYZ.Z);
+			PlatingHelper.PlaceMeshAtHeight(selectedItem, originalMeshBounds.minXYZ.Z);
 
 			Invalidate();
 		}